Shutter is a feature-rich screenshot program. You can take a screenshot of a specific area, window, your whole screen, or even of a website – apply different effects to it, draw on it to highlight points, and then upload to an image hosting site, all within one window.
Additionally, the time-delay capture is awesome; I need no longer worry about keystrokes.
I noticed that when posting with ScribeFire, the screenshots I was pasting from my clipboard weren’t being uploaded. While Windows Live Writer does it better, with ScribeFire, if you use Shutter, any clips you take are automatically saved as files so it’s a matter of uploading the image: